Automatic carburetor control and indicator



Nov. 27, 1923.

S. E. FOREMAN AUTOMATIC CARBURETOR CONTROL AND INDICATOR Filed Aug. 25 1922 wi e/770W.

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Patented Nov. 27, 1923.

UNITED STATES SAMUEL E. renames, or'rnnucnn, KENTUCKY.

AUTOMATIC cnmau'nn'ron CONTROL AND mmcnron. 5 7

Application filed August 25, 1922. Serial No. 58 L258.

To all whom it may concern:

Be it known that I, SAMUEL E. FOREMAN, a citizen of the United States, and a resident ofv the city of Paducah, county of Mc- Cracken, and State of Kentucky, have invented a new and useful Automatic Carburetor Control and Indicator, of which the following is a. specification.

This invention relates to an automatidcarburetor control and indicator. 7

An object of the invention is to provide an automatic carburetor controlling device for automatically regulalt the flow of fuel to the engine in accdid anoe with the variation of the temperature of the engine,

and an indicating instrument-o erated by said device to indicate the temperature condition of the engine.

Other objects will appear from the following description, reference being made to the drawing in which 7 Fig. 1- is a view showing my invention in connection with the engine of an automobile on the instrument board of the automobile where it is readily observable.

Fig. 2 is a view showing the face of the indicating device.

Fig. 3 is a section view on the line 33 of Fig. 2.

Fig. at is a view showing the spaced relation of the controlling device with respect to the exhaust manifold of the engine.

The carburetor 1 is of a familiar type having a valve provided with a stem 2 extending outside the carburetor to, provide means for operating the valve to regulate the flow of fuel to the engine. From the carburetor 1 the usual intake pipe 3 opens into the usual intake manifold 4 which opens into the respective cylinders of the engine.

Theexhaust manifold 5 is of, usual conlapping parts. The forward end of one of the parts is provided with a hole 8 receiving a reduced portion on the end of a spacing element 9 bearing against the exhaust manifold. The screw bolt 10 passes through the spacer 9 and engagesin a threaded hole in the exhaust manifold.

rted I .and with the indicating device suppo A bar 11 has its upper end pivoted on a spacer element 12 which is provided with a reduced portion on its outer end extending through a hole in the upper end of said bar 11. A'screw bolt 13 passes through said spacer element and engages in a threaded hole in the exhaust manifold 5,

-- The lower end of the pivoted bar 11 has a rack 16 meshing with a pinion 17 on the valve stem 2.' It is obvious that by this construction when the exhaust manifold becomes heated and expands as a result ofthe engine becoming heated, the lower end of the bar 11 will be drawn forwardly, turning the valve stem 2 in a direction to close the valve and to restrict flow of fuel to the engine. The bar 6 being spaced from the exhaust manifold does not expand as much as the exhaust manifold so that theresult is as stated. c

The indicating device is located on the instrument board of the automobile and com prises a back member 18 having a dial on its face provided with app'ro riate indicia as, for instance the words C'old, Warm, Normal, lIot, and Danger. A ring 19 encloses the dial andis attached to the dash by bolts 20. A lass face or cover 21 is secured or clamped in place between a flange 22 on the ring 19 and a' flange 23 on the dial. I k

A pointer 24 within the space between the glass plate 21 and the dial 18 is attached to the end of a stem 25 rotatively supported in a hole formed in an extension 26 inconnec tion with the dial and projecting through a hole in the instrument board. The forward end of the stem 25 is connected to a fitting member 27 attached to the upper end of a flexible shaft 28. The lower end of the flexi-' ble shaft 28 has a bifurcated member 29 attached thereto extending through holes in an arm 30 on the upper end of the valve stem 2. It is obvious that when the valve stem is turned as before described, the flexible shaft 28 will also be turned in conformity therewith, with the result that the pointer 24 will be turned to a corresponding position on the dial. For instance, when the engine is running in the normal way the factory and eificient device for its intended purposes.

.' I do not restrict myself unessentially' but what I claim and desire to secure by Letters Patent is 1. In combination with the exhaust 'manifold and carburetor of an internal combustion engine, a valve stem extending from the carburetor, a bar, means supported by the exhaust manifold for supporting said bar spaced from the exhaust manifold, a bar pivoted to the exhaust manifold andto the first-named bar and adapted to move with the expansion of the manifold, 'a device' for actuating said second bar in one direction, means for connecting the second-named bar and said valve stem whereby movement of the second-named bar results in a relative mo ement of the valve stem, an indicating device, and means for operating the indicating device from said valve stem.

2. In combination with the exhaust manifold and carburetor of an internal combustion engine, a. valve stem extending from the carburetor, a bar, means supported by the exhaust manifold for supporting said bar spaced from the exhaust manifold, a bar Eivotedto the exhaust manifold and to the rst-na'med bar and adapted to move with the expansion of the manifold, a device for actuating said second bar in one direction, means for'controlling the second-named bar and saidvalv'e stem whereby movement ofthe second-named ban results in a relative movement of I the valve stem, an indicating device, a flexible shaft connected with said indicating device,- and' means for operating said shaft from the valve stem.

3. The combination with the exhaust manifold, the carburetor, and the valve of-the carburetor, -.of means for opmember erating the'valve member of the carburetor as an incident to the expansion of. the exhaustmanifold when heated, a. spring cooperating with said means to operate the valve member, an indicating device, and

means for operating the i'nd1cating device from the valve member, of the carburetor.

SAMUEL. E. FOREMAN. 

